On Xcode 27.0 (27A266a) / macOS 27.2, I ran xcrun mcpbridge from a scripted stdio MCP client and captured traffic system-wide, with a curl control visible in the same captures. Findings: mcpbridge itself opened no network sockets (online or offline, and under a deny-network sandbox). The "Xcode Service" process it connects to made about 2 KB of outbound TLS to an Apple edge address at startup, plus a certificate check via trustd and a request to devimages-cdn.apple.com. When a workspace was opened through XcodeOpenWorkspace, Xcode Service also made two TLS connections to appstoreconnect.apple.com (about 5 KB upstream). This did not occur without a workspace open, and XcodeListWorkspaces itself caused no traffic. mcpbridge sends a CoreAnalytics event to analyticsd (strings: "MCPBridgeTelemetry: Submitted CoreAnalytics event" / "Telemetry off; skipped"), payload <private>. Questions: What is sent to App Store Connect when a workspace is opened this way, and is it the same as opening the project in Xcode directly? What does the MCPBridgeTelemetry event contain, is it sent off-device, and what setting controls it? Is any MCP tool input or output (file contents, paths, build output) sent to Apple?